The U.S.-Israeli war on Iran is a “misadventure” whose goals and exit strategy remain unclear, Russia’s ambassador to the U.K. told CNBC.

Andrey Kelin said Russia has “a lot of sympathy” with Tehran and said “the best end” to the escalating Middle East war is for it to “show only that they are senseless.”

“We still are trying to understand, what are the goals of President Trump in this campaign. You know that lots of doubts have been expressed about the exit strategy that the American administration can have in this endeavour,” Kelin told CNBC’s Steve Sedgwick in an interview recorded on Thursday.

Russian President Vladimir Putin sent a message to Iran’s new supreme leader, Mojtaba Khamenei, earlier this week, offering his “unwavering support” to Tehran and saying the country “has been and will remain the Islamic Republic’s reliable partner.”

The war has been raging for two weeks, with heavy strikes reported across Iran’s capital city and shipping traffic through the strategically vital Strait of Hormuz severely disrupted.

The White House has said the objectives of Operation Epic Fury have been to destroy Iran’s ballistic missile arsenal and production capacity and its navy, sever its support for proxies in other countries and ensure Iran can never acquire a nuclear weapon.

The White House said on Thursday these objectives “have remained unchanged unambiguous, and consistent” since the operation began on Feb. 28.

“We have a lot of sympathy with Iran. We have a lot of sympathy as well with the Persian Gulf states, there is no doubt at all. As for the beginning, I cannot understand the position of when everybody is blaming Iran,” Kelin said.

“[The] crisis has started with the, as I have said, with Israel and U.S. aggression against Iran and it was in the middle of talks, of course,” he continued, referring to negotiations over Iran’s nuclear program held in the Swiss city of Geneva last month.

“My president discussed this issue with the president of the United States, and we can make a good contribution by the way to finish it, to wrap it up.”

CNBC has contacted a spokesperson at the White House and Israel’s Foreign Ministry and is awaiting a response.

Alongside China, which has received millions of barrels of oil through the Strait of Hormuz even as war chokes the waterway, Russia stands as one of Iran’s most influential diplomatic partners.

U.K. Defense Secretary John Healy told reporters on Thursday that Putin’s “hidden hand” appears to be behind Iran’s military playbook as well as potentially some of Tehran’s military capabilities.

Iran has reportedly fired off more than 2,000 Shahed drones across the Middle East since the war began. These drones, which were first designed in Iran, have been used extensively during Russia’s invasion of Ukraine.

Ukrainian President Volodymyr Zelenskyy said earlier this week that the Kremlin’s own assessments estimate that more than 1.3 million Russian soldiers have been killed and wounded on the battlefield since Russia launched its full-scale invasion of Ukraine in February 2022. CNBC could not independently verify this report.

A report from the Center for Strategic and International Studies published in January said Russian battlefield casualties are significantly greater than Ukrainian fatalities, with Ukrainian forces likely suffering somewhere between 500,000 and 600,000 casualties.

Kelin said he was sure that both Moscow and Kyiv would eventually agree to a diplomatic resolution to the war.

“I cannot say when it is going to happen, but a diplomatic solution is badly needed,” Kelin said.

Kelin said The U.S. was “playing a constructive role in this diplomatic effort,” but added: “Since Ukraine is not prepared at the moment and since Europe still prefer to back up Ukraine as much as possible, to supply it with weapons, with money … making no efforts to solicit or to help this diplomatic solution, this will last for some time.”

U.S-brokered talks on the Ukraine war have been put on hold due to the Iran conflict, with U.S. Special Envoy Steve Witkoff telling CNBC on Tuesday that the discussions would now likely take place next week. Ukraine’s Zelenskyy had urged the U.S. not to remove sanctions on Russia ahead of those talks, although the White House has since moved to temporarily lift sanctions on Russian crude at sea.

The European Union’s foreign policy chief, Kaja Kallas, recently said there appears to be “no end in sight” to Russia’s full-scale invasion of Ukraine.

Speaking at a news conference on Monday, she said it is clear Russia’s army was “bogged down” and its economy is in steep decline.

“Russia’s maximalist demands cannot be met with a minimalist response,” Kallas said. “It’s just common sense, if Ukraine’s military is to be limited in size, Russia’s should be too.”